NL272337A - - Google Patents

Info

Publication number
NL272337A
NL272337A NL272337DA NL272337A NL 272337 A NL272337 A NL 272337A NL 272337D A NL272337D A NL 272337DA NL 272337 A NL272337 A NL 272337A
Authority
NL
Netherlands
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of NL272337A publication Critical patent/NL272337A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
NL272337D 1960-12-23 NL272337A ( )

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78147A US3059058A (en) 1960-12-23 1960-12-23 Subscriber line circuit with local ringing

Publications (1)

Publication Number Publication Date
NL272337A true NL272337A ( )

Family

ID=22142214

Family Applications (1)

Application Number Title Priority Date Filing Date
NL272337D NL272337A ( ) 1960-12-23

Country Status (7)

Country Link
US (1) US3059058A ( )
JP (1) JPS403575B1 ( )
BE (1) BE611694A ( )
DE (1) DE1202349B ( )
FR (1) FR1311553A ( )
GB (1) GB1002571A ( )
NL (1) NL272337A ( )

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE626082A ( ) * 1961-03-03
US3247327A (en) * 1963-01-17 1966-04-19 Northern Electric Co Telephone signalling circuits
US3235669A (en) * 1963-01-17 1966-02-15 Northern Electric Co Telephone signalling circuits
US3312787A (en) * 1963-10-17 1967-04-04 Stromberg Carlson Corp Signaling system
US3443033A (en) * 1963-10-31 1969-05-06 Bell Telephone Labor Inc Ringing arrangement for time division telephone systems
US3671678A (en) * 1970-12-22 1972-06-20 Stromberg Carlson Corp Ringing control circuit
US3978292A (en) * 1974-11-07 1976-08-31 Bell Telephone Laboratories, Incorporated Ringing control circuitry with shared ringing loop current detector
US3978293A (en) * 1974-11-07 1976-08-31 Bell Telephone Laboratories, Incorporated Ringing control circuitry with shared ringing loop current detector
FR2296324A1 (fr) * 1974-12-27 1976-07-23 Ericsson Telefon Ab L M Dispositif d'appel perfectionne pour installations de telephonie
TW201524949A (zh) 2013-11-15 2015-07-01 Invista Tech Sarl 過氧縮醛中間物之轉換

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2152475A (en) * 1938-03-29 1939-03-28 Bell Telephone Labor Inc Signaling system
BE515605A ( ) * 1952-11-18

Also Published As

Publication number Publication date
JPS403575B1 ( ) 1965-02-25
BE611694A (fr) 1962-04-16
DE1202349B (de) 1965-10-07
GB1002571A (en) 1965-08-25
US3059058A (en) 1962-10-16
FR1311553A (fr) 1962-12-07

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